Functors and Monads for People Who Have Read Too Many "Tutorials" (2021)

Re:Functors and Monads for People Who Have Read Too Many "Tu... by tome on Friday August 02, 2024 @03:03PM (#41141607)

> So is it an interface or a function? Is it one and the same in Haskell? I am utterly confused.

Functor is an interface. It has one member: a function called fmap. To specify how a type meets the Functor interface you have to define the function fmap for that type.

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Re:Functors and Monads for People Who Have Read Too Many "Tu... by necovek on Saturday August 03, 2024 @01:02AM (#41144787)

Thanks: that actually does a better job explaining it in fewer words.

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